The third sequence, originally proposed in 1926 by two American ornithologists, Alexander Wetmore and Waldron De-Witt Miller, but also based partly on the earlier work of others, placed the crows near the base of the oscine family tree and placed the so-called nine-primaried oscines, dominated by the seed-eating fringillids, at the top.
An innate predisposition isn't enough for oscine songbirds to learn their repertoire, Pepperberg said.
Oscine (acromyodean): complex musculature involving four pairs of intrinsic muscles (but three pairs in lyrebirds and scrub-birds); some cartilaginous specializations; pessulus present (except in larks).
In most oscines the posterior (plantar) surface of the tarsus is bilaminate that is, covered by two long plates, or laminae.
All oscines and most suboscines have a single pair of posterior sternal notches; only the tapaculos and certain of the terrestrial antbirds (Conopophaga, Pittasoma, Hylopezus, Myrmothera) have two pairs.
The Hirundinidae belongs to the songbird suborder Oscines (also called Passeri).
Within the oscines, one of the greatest problems is a satisfactory delineation and arrangement of the many superficially similar groups.
A fifth group, the finchlike oscines of South America, appear to be seed-eating terrestrial tanagers that continue to expand the perimeter of that already impressive adaptive radiation.
Most taxonomists agree that the oscines contain three large groups: the crows, Old World orioles, birds of paradise, and diverse insect-eating birds of Australia and New Guinea, (2) the thrushes, babblers, Old World flycatchers, Old World warblers, kinglets, and allies, and (3) the finches, icterids, tanagers, and allies.
The finch-billed oscines of the world have been subdivided into at least four major, probably unrelated groups the Fringillidae, Emberizidae, Cardinalidae, and Estrildidae.
At the evening course, she lectured about one of her favorite subjects — the songbirds known as oscines, which learn their melodies much like human children learn language.
